X11SL DLC: superlight chain for use with 11-speed Campagnolo/Shimano/SRAM with Diamond Like Coating for extra durability, 235g X11SL: superlight chain for use with 11speed Campagnolo/Shimano/SRAM (Gold color is Ti Nitride coating), 235g X11EL : an extra light design with mud shedding cutouts, double durability, and full nickel plated for use with 11 speed drive trains X11e sport feature optimized pin power and enhanced durability of use with strong midmotors EPT (EcoProTeQ) chains double the rust resistance compared to Rust Buster treatment. The smoother coating results in less noise, optimum performance and maximum rust resistance X11.93: Economy chain for use with 11speed Campagnolo/Shimano/SRAM All versions feature optimized chamfer angles for superior stability in extreme chainlines, outer plate chamfering for minimized cassette tooth interface, and a double XBridge structure for improved shifting performance